World’s largest climate modelling experiment: Climateprediction.net is a distributed computing, climate modelling project.We run climate models on people’s home computers to help answer questions about how climate change is affecting our world, now and in the future. Sign up now and help us predict the climate.

Scientists at the Belly Button Biodiversity Project wanted to engage the public. They started to culture the bacteria in people's navels as a way to remind them about the life living on their bodies. In the process, they discovered diverse organisms, some of them completely new to science. (audio). 4/13.

Encyclopedia of Life is an online, collaborative project where you can learn about any species on Earth, as well as contribute information and submit photos. This global initiative seeks to create an "infinitely expandable" resource for all of our planet’s 1.9 million known species.

COASST is a network of citizen scientists that monitor marine resources and ecosystem health at 300 beaches across northern California, Oregon, Washington, and Alaska.

Operation RubyThroat observes hummingbird migration and/or nesting behavior and share information with peers across North and Central America. The resulting data on hummingbird behavior and distribution are submitted to a central clearing house, analyzed, and then disseminated to scientists through the Operation RubyThroat website. Ruby-throated Hummingbirds (Archilochus colubris) are the most widely distributed of the 339 species of hummingbirds, occurring in all ten countries of North and Central America. They come frequently to nectar plants and backyard sugar water feeders and are easily observed. Nonetheless, many aspects of the birds’ natural history are not well understood.

Jellywatch.org is a public database documenting ocean conditions. We are especially interested in jellyfish washing up, but we also track red tides, squid and mammal strandings, and other indicators of ocean health.

National Park Service internships provide learning opportunities through activities such as wilderness re-vegetation, assistance with preservation and restoration projects, water quality monitoring, surveying, educational cave tours, or assisting resource management staff. Internships offer an interesting and educational experience in some of the most beautiful areas of the country. Many parks offer opportunities for internships. A centralized list of internships, however, is not available. If you are looking for an internship in a park, the National Park Service suggests that you select one or more parks that interest you and contact them directly. Information on how to contact a park is available on each park's Web site. For a complete list of parks, visit the following website: http://www.nps.gov/findapark/index.htm.

Habitat Stewards are volunteers trained by the National Wildlife Federation to help people create and restore wildlife habitat in their communities. Stewards lead efforts to build wildlife habitats, provide information about conservation and environment initiatives, and organize landscapes in public places and home settings.

Audubon’s Christmas Bird Count, the first and oldest Citizen Science project, at over 110 years, is also one of the largest, with 60,000+ person-days of efforts and more than 50 million birds counted each year. The CBC has contributed greatly to the science of bird conservation with hundreds of publications, including many in important scientific journals. From December 14 through January 5 each year, tens of thousands of volunteers throughout the Americas take part in an adventure that has become a family tradition through the generations. Year-round bird count.

Redwood Watch needs volunteers to take photographs of redwood trees and submit them to researchers. Your data will help researchers understand where redwoods survive and help track redwood forest migration over time.

FrogWatch USA is the AZA (Association of Zoos and Aquariums)’s flagship citizen science program that allows individuals and families to learn about the wetlands in their communities and help conserve amphibians by reporting the calls of local frogs and toads.

ChargeCar makes electric vehicles more practical and affordable by sharing GPS data from your regular car trips. Contributing your commute data to ChargeCar helps us better understand the driving habits and needs of everyday commutes. You do not need an electric car to contribute to our project.

The Marine Mammal Center is a non-profit organization dedicated to the rescue, rehabilitation, and release of injured, sick, and orphaned marine mammals. The Center relies heavily on a dynamic volunteer work force comprised of more than 800 individuals from Mendocino to San Luis Obispo counties. Volunteers handle everything from cleaning pens to preparing food, updating medical charts, administering antibiotics, and taking blood samples.

The Living Roof Project is a citizen science program that gives community members an opportunity to learn about the California Academy of Science's unique roof ecosystem and to contribute to important baseline data regarding the many plants, birds, and arthropods that inhabit and utilize the Living Roof’s 2.5 acres of green space.